Firmness
Medium
Type
Pocket Spring
Depth (cm)
29
Number of Layers
8
Trial Period (nights)
100
Warranty (years)
5
Price Range
£1,069 to £2,049
Best Sleeping Position(s)
Certifications
Assessed from the specification published by Mattress Online, captured September 2026, and from regular price comparison across our UK retail partners.
This is a natural-fillings mattress through and through: traceable British wool, hemp, flax and cotton, with no foam layers. Those fibres are breathable and moisture-wicking, which means it should run cooler than most foam-topped alternatives, so hot sleepers are well served here. Support comes from three tiers of springs, including 1,000 of Harrison Spinks' Cortec Quad Revolution springs, which places mini springs inside full-size ones for a more adaptive response to your weight. The cover meets fire safety standards without FR chemicals, a genuine rarity. Yes, it's a serious spend at £1,069 upwards, but the spring count, natural materials and UK handcrafting go some way to justifying it. This model is also available in soft to medium, medium and firm options.
Key Features & what's inside
- Cover. Harrison Spinks' own woven cover meets fire safety standards without FR chemicals. That means fewer treatments between you and the fillings.
- Wool comfort layer. A layer of 100% traceable British wool sits near the surface, which means natural insulation and breathability where you'll feel it most.
- Blended fillings. Blended wool, hemp and flax boost airflow through the mattress. In practice, this helps keep you at a comfortable temperature overnight.
- Moisture-wicking layer. A further layer of cotton, hemp and flax wicks moisture away, which reduces heat build-up while you sleep.
- Durability layer. Ecotex fibres add durability, helping the fillings hold their shape over time.
- Posturfil mini springs. 1,000 Posturfil springs react instantly to movement. You'll feel this as flexible comfort that adjusts as you shift position.
- Mini springs. An additional 7,500 mini springs create more points of contact with your body, contouring closely to your shape for a more personalised feel.
- Cortec Quad Revolution springs. The base layer holds 1,000 Cortec Quad Revolution springs, with mini springs nested inside regular ones, individually pocketed and grouped in fours. This delivers adaptive, responsive support beneath the comfort layers.
Layer details from mattressonline.co.uk product page, September 2026.
Who's it NOT for?
The listing rates this version soft to medium, so if you sleep on your front or simply prefer a firmer surface, look at the firm option in the same range instead. Budget shoppers should also think carefully: at £1,069 upwards, there are far cheaper pocket sprung mattresses if natural fillings aren't a priority for you.
Harrison Spinks Gold 9500 Pocket Mattress (Medium Feel)
Is the Harrison Spinks Gold 9500 soft or firm?
This version is listed with a soft to medium feel firmness rating, slightly gentler than a standard medium. The model is also available in medium and firm options, so heavier sleepers or front sleepers can choose a firmer build of the same design.
How many springs does the Gold 9500 have?
9,500 in total, arranged in three tiers: 1,000 Posturfil mini springs, 7,500 additional mini springs, and 1,000 Cortec Quad Revolution springs, which nest mini springs inside full-size pocketed ones. More springs means more points of contact, so the mattress contours more closely to your shape.
Does the Harrison Spinks Gold 9500 come with a trial?
MattressOnline lists a 100-night trial on this mattress, though that is the retailer's own offer rather than a manufacturer promise, so check the terms wherever you buy. The mattress itself carries a 5 year guarantee.
What is the Harrison Spinks Gold 9500 made of?
Natural fillings throughout: traceable British wool, cotton, hemp, flax and Ecotex fibres, layered over 9,500 springs. There's no foam, and the woven cover meets fire safety standards without FR chemicals. It's handcrafted in the UK and is 29cm deep.
Is the Gold 9500 good for hot sleepers?
It should suit you well. The wool, hemp, flax and cotton layers are naturally breathable and moisture-wicking, which means heat escapes rather than building up, and there's no heat-retaining foam anywhere in the construction.
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